Transformer insulateing tape?
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From: Hammy on 21 Jun 2010 12:22 On Mon, 21 Jun 2010 13:23:35 GMT, zekfrivo(a)zekfrivolous.com (GregS) wrote: >In article <mrsp16186ug87255qercqsp34jm20hr0a0(a)4ax.com>, Hammy <spam(a)spam.com> wrote: >> >>What kind of tape can you use for insulation between primary to >>secondary of flyback transformer. I know mass produced professional >>designs use a 3M specialty tape. What I'm looking for is a tape I >>could pick up at Staples or some office supply store or hardware >>store. >> >>The vinyl electrical tape I can find is only rated for 600V and 80C >>MAX TEMP. >> >>Is there a commonly available tape that is good for higher temp and >>offers higher insulation? I've read of people using a mylar tape is >>there a brand name ,type anyone could recommend? >> >>This is for a 90 - 140Vac input flyback. > >I don't know why you need such a high temp. Ferrites run more efficent when hot. If you figure a max ambient inside an enclosure of 50 to 70C. This wouldnt leave much dT room useing an 80C rated tape. I took core external temp readings of the 24W one in about 27C ambient the core temp was in excess of 70C. It's pretty common to run them hot touch one working under rated power with a wet finger pssst. >I usually build enough layers with various material for spacing >so melting is not such an issue. > >I also use mica and Kapton tape. Cool. The mica tape is great for turning >white lamps yellow.. It not that expensive to order and have around. > >greg
From: Archimedes' Lever on 21 Jun 2010 13:33 On Mon, 21 Jun 2010 06:04:43 -0700 (PDT), Bill Slotard <bill.slotard(a)ieee.org> wrote: > >Amusing to see Dimbulb once again failing to get the point. When you make one, it MIGHT get noticed. Not likely, however, wolf cry retard.
From: Archimedes' Lever on 21 Jun 2010 13:34 On Mon, 21 Jun 2010 13:23:35 GMT, zekfrivo(a)zekfrivolous.com (GregS) wrote: >I also use mica and Kapton tape. Cool. The mica tape is great for turning >white lamps yellow.. It not that expensive to order and have around. > >greg Some of the replies here are just unreal.
From: DrParnassus on 21 Jun 2010 13:37 On Mon, 21 Jun 2010 08:01:54 -0700, Fred Abse <excretatauris(a)invalid.invalid> wrote: >On Sun, 20 Jun 2010 22:45:19 -0700, Bill Sloman wrote: > >> That the US persists in using the obsolete imperial units is >> definitely dorkish. > >US customary units are NOT "Imperial". > >Apart from there being differences, for example the pint, gallon,etc. we >dumped the British Empire back in 1776. > >An action that your native country is still arguing about. > >Customary units of mass and length in the US have been defined in terms of >metric standards since 1893 (Mendenhall Order). The guy is a retard and deserves no information, and the idiot rejects it anyway. Rememeber the 555 timer threads?
From: Bill Sloman on 21 Jun 2010 13:40
On Jun 21, 5:01 pm, Fred Abse <excretatau...(a)invalid.invalid> wrote: > On Sun, 20 Jun 2010 22:45:19 -0700,Bill Slomanwrote: > > That the US persists in using the obsolete imperial units is > > definitely dorkish. > > US customary units are NOT "Imperial". Eo how would you prefer to label them? > Apart from there being differences, for example the pint, gallon,etc. we > dumped the British Empire back in 1776. We've noticed. > An action that your native country is still arguing about. Australia couldn't care less. > Customary units of mass and length in the US have been defined in terms of > metric standards since 1893 (Mendenhall Order). So what. They are still clumsy and irrational. -- Bill Sloman, Nijmegen |